I know that minor scale is just a semitone lower than the major scale I also know that a sharp is a semitone higher than the scale your on. and a flat is a semitone lower than the scale you on. then i bumped into this C#minor cord if its a sharp and minor scale at the same time dosent it just mean major C? Why write it this way?
I believe you misunderstand the relationship of Major and Minor scales, and how flats and sharp notes are used in relation to keys and chords, so there is no way to answer your question directly.
You should seek out informative web sites such as musictheory.net that have free lessons and exercises, and start expanding your knowledge of music theory fundamentals. If you browse the questions on this StackExchange you will also find more information about what Major and Minor scales and keys are, and how sharp and flat notes work.
To answer your question, the C# is the root note of the chord, and it contains a minor 3rd and a perfect 5th in the chord, which is what makes it the C#minor Chord. The C# Minor scale would be the Minor scale pattern with C# as its Tonic note.
Sorry, but there are just too many wrong statements in your post to be able to answer anything in general. You should definitely go over all the basics again.
You should check sharps and flats again. You don't just sharpen or flatten any major key into minor keys or such sings. However, you could turn single major chords into minor chords by flatten the chord's 3rd for example. C major (C, E, G) would turn into C minor (C, Eb, G).
You should check minor and major scales again. A scale doesn't really get major or minor just because you sharpen or flatten them. All major and minor scales have a certain formula of intervals. You can have a C major scale (C, D, E, F, G, A, B) as well as a C minor scale (C D Eb F G Ab Bb). 3 notes are different in this case, not like you assume only the first or all of them?!
As the other answers mentioned there is a lot of stuff in your question that is not correct. But that’s ok. That’s why we ask questions. To learn and better our understanding.
Let’s start with notes and flats and sharps.
If you take an individual note, let’s say the note G and find it on the piano or the guitar you have just that, a note. We are not in a key and we’re not playing a scale yet. We are just playing a single G note. Now, if you play the note directly next to it on the piano or the guitar it will be a different note.
Each fret on the guitar is a half step (that’s what I call it here in the US, some places call it a semitone). Moving one key over on the piano (don’t forget the black keys) is also a half step. If you play a note lower in pitch directly next to the G it will be a Gb (G flat). Please note that this note is also called an F# (F sharp) and in some cases you will call it F# and some Gb depending on the context. These note names are enharmonic, which is a fancy way of saying the same pitch has two different names.
Now some notes on the piano don’t have a black key between them. B and C, and E And F. That’s because these two sets of notes have what we call a natural half step between them. If start on C and move down (to the left) to the next note, it will also be white, and it may be called Cb (c flat) or maybe B. Again these two note names are enharmonic.
Ok. That’s some basics about notes. Let’s get a brief explanation about keys.
A key is the tonal center of a song. The root of the key is the note that feels like home, it’s the note that you play to have a feeling of an ending, when all the tension in the song is gone and it feels final. If your song is in the key of C major there is a scale that goes along with that key. The notes that belong to the C major scale are C D E F G A B and C. All natural notes ( no sharps or flats). On the piano this is all the white keys. The distance between these notes ( the distance between two notes is called an interval) is the same for all major scales. If you remember what the natural half steps were you will see that from C to D is a whole step. D to E is a whole step. E to F is a half step. You can figure out the rest.
Now that you have figured out the distances between the notes you know the major scale is always starting from the root, Whole, whole, half, whole, whole, whole, half.
You can start on any note and find a major scale from that note. However to get the correct notes you will need flats or sharps.
Let’s go with G major. We start on G and need a whole step. So G to A. Then whole. A to B. Half is B to C (there is that natural half step again). Whole C to D. Whole D to E. And whole. But wait a second. If I go from E to F it’s a natural half step. What do we do. We need to raise that F up a little to make it a whole step. Ok so we will say F# (F sharp). E to F# is a whole step and now we need a half step to G. Luckily F# to G is a half step. They’re right next to each other on the piano and G is our root and we are back home!! Now you try F major. Hint it will have one flat in it.
And finally we have minor scales. There are three ways to think of this. You can find a minor scale by using the same notes as a major scale but starting on the 6th note of the major scale. So in C the 6th note is A. To have A minor we would use all the notes in C (just white notes in the piano) but start on A and end on A. So A B C D E F G A.
The second way is that you can see the new pattern it’s whole half whole whole half whole whole.
The third way is to start with major scale and flatten (lower the note a half step) the 3rd, 6th and 7th notes.
This is one type of minor. There are two others but let’s stop here as this already a lot of info to take in.